Hack around missing xorg-x11-font-utils package

This is missing in the CentOS 9 repositories for some reason. Download
it directly from the build system until this can be fixed.

.github/containers/centos9/build.sh

 docker run --volume ${CURDIR}/rpmbuild:/home/rpm/rpmbuild --interactive --rm tigervnc/${DOCKER} \
 	bash -e -x -c "
 	sudo dnf install -y xorg-x11-server-devel;
+	sudo dnf install -y https://kojihub.stream.centos.org/kojifiles/packages/xorg-x11-font-utils/7.5/53.el9/x86_64/xorg-x11-font-utils-7.5-53.el9.x86_64.rpm;
 	sudo dnf builddep -y ~/rpmbuild/SPECS/tigervnc.spec;
 	sudo chown 0.0 ~/rpmbuild/SOURCES/*;
 	sudo chown 0.0 ~/rpmbuild/SPECS/*;